Guild Wars - Future Developments @ Guild Wars Guru

They are abandoning the Campaign format because it required them to reinvent GW completely for every chapter, and it began to feel 'bloated' to them. It's also increased the tutorials and has created a barrier to new players entering the chapters. The Expansion increases the timeframe but allows them to do what they want to with the game, without worrying about new professions, or pre-lvl20 content. This is a new blueprint for a completely new game.